View Immortal Jellyfish Size Background. © takashi murai/the new york times. The immortal jellyfish turritopsis dohrnii (formerly known as turritopsis nutricula) 1.

Facts about The Immortal jellyfish - YouTube
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Turritopsis dohrnii), the only species on earth which can live (theoretically, at least) an eternal life. The immortal jellyfish (as it is better known popularly) propagate and then, faced with the normal career path of dying, they opt instead to revert to a sexually immature stage. Fully grown, they're about the size of a pinkie fingernail.

Turritopsis dohrnii is the only known animal to be immortal.

Listed top in the top 10 list:longest living animals. Why is this topic important? It is probably the only animal in the world that can leap back toward its first stage of lifecycle and then return to life again. Meet immortal jellyfish (scientific name: